All categories

2 years ago

I need some help please

Mathematics

1 answer:

Nataliya [291]2 years ago

4 0

Answer:

25π

Step-by-step explanation:

You might be interested in

The distribution of the test statistic for analysis of variance is the F-distribution. true or false

lubasha [3.4K]

Answer:

True. See explanation below

Step-by-step explanation:

Previous concepts

Analysis of variance (ANOVA) "is used to analyze the differences among group means in a sample".

The sum of squares "is the sum of the square of variation, where variation is defined as the spread between each individual value and the grand mean"

If we assume that we have $k$ groups and on each group from $j=1,\dots,k$ we have $k$ individuals on each group we can define the following formulas of variation:

$SS_{total}=\sum_{j=1}^p \sum_{i=1}^{n_j} (x_{ij}-\bar x)^2$

$SS_{between=Treatment}=SS_{model}=\sum_{j=1}^p n_j (\bar x_{j}-\bar x)^2$

$SS_{within}=SS_{error}=\sum_{j=1}^p \sum_{i=1}^{n_j} (x_{ij}-\bar x_j)^2$

And we have this property

$SST=SS_{between}+SS_{within}$

The degrees of freedom for the numerator on this case is given by $df_{num}=k-1$ where k represent the number of groups.

The degrees of freedom for the denominator on this case is given by $df_{den}=df_{between}=N-k$ .

And the total degrees of freedom would be $df=N-1$

And the we can find the F statistic $F=\frac{MSR}{MSE}$

8 0

3 years ago

Which statement is true?

ozzi

D (2 and 4), vertical angles oppose eachother, and are always congruent (identical).

7 0

2 years ago

Read 2 more answers

Round 8,295.357 to the nearest tenth

Tresset [83]

Answer:

8,295.4

Step-by-step explanation:

4 0

2 years ago

Read 2 more answers

HELP!! 25 Points!!!

elena55 [62]

There you go... a. 10

If we add x to both sides, we get rid of the x on the right side which leaves us 1/2x + 2 = 7. (1/2=0.5)

Then if we substract 2 from both sides, we will get 1/2x = 5

If half of x = 5, then the whole of x = 10.

7 0

2 years ago

Legal descriptions tend to prefer neat straight lines from point to point, regardless of describing a square, rectangle, triangl

julia-pushkina [17]

Answer:

When describing a property line drawn down the center of a creek bed

5 0

2 years ago